Machine for hulling and cleaning grain



(No Model.)

S.,K.TODD. M'AOHILIBFOR HULLING AND CLEANING GRAIN. No. 290,288.Patented Dec. 18, 1883.

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' lTED STATES PATENT OFFICE.

SAMUEL K. TODD, OF EUGENE, INDIANA.

MACHINE FOR HULLING AND CLEANING GRAIN.

SPECIFICATION forming part of Letters Patent No. 290,288, dated December18, 1883,

Application filed March 29. 1883.

To all whom it may concern.-

Be it known that I, SAMUEL K. TODD, a citizen of the United States,residing at Eugene, in the county of Vermilion and State of Indiana,have invented a new Improve ment in Machines for Hulling and CleaningGrain, of which. the following is a specification.

My invention relates to that class of grain hulling and cleaningmachines which act upon the wheat by abrasion, to reduce the hulls topowder, and by atmospheric suction to with draw said powder and otherdirt; and it consists in the construction and combination of partsforming a grain hulling and cleaning machine, hereinafter described andclaimed, reference being had to the accompanying drawings, in which-Figure 1 is a longitudinal vertical section, part in elevation. Fig. 2is a transverse vertical section at :0 00, Fig. 1, part in elevation,showing my invention; and Fig. 3 is a transverse vertical section at gy, Fig.1, part in elevation.

A represents the frame of the machine.

B represents the outside shell, consisting of a cylinder of perforatedsheet metal or wirecloth, to admit air, but too fine to allow grain topass through it, and fixed to the frame A.

0 represents the main shaft ofthe machine, which is rapidly rotated inbearings D by a belt upon the pulley 0. Upon this shaft are secured atequal intervals a number of wheels, E, very open in their webs and lightin their rims, and all turned to one diameter. Upon these wheels issecured a metallic cylinder, 6, perforated or of wire-cloth, like thatof the shell B, for the purpose of admitting air and dust to itsinterior. One end of cylinder 6 is perforated with large holes It, toallow free passage of dust through them from the interior of thecylinder.

b is a partition across cylinder B, having a central aperture, in whichcylinder-e revolves without contact, yet close enough to prevent theescape of grain.

f is a chamber formed in the end of cylinder B by partition I), and thehead in which a fan, F, secured upon shaft D, revolves. The cylinder Bis not perforated around chamber f, but a is a tangential outletthereto. The fan acts 'centrifugally, to draw air and dust (No model.)

from the main cylinder B into and through the inner cylinder, e, to thefan-chamberfiwhence it is discharged by the mouth a into any usualconductor or receptacle. The webs of wheels 'E are made open, to allowfree passage to the air and dust. 9 represents a number of blockssecured upon cylinder 6 by bolts passing in through the rims of wheelsE.

G represents blades secured upon the sides of blocks g in pairs by meansof bolts passing through said blades and blocks. These blades revolvewith cylinder 6 and act upon the grain by beating and abrasion, -toremove its hull and reduce the same to fine powder. The grain isadmitted to the outer cylinder, B, through a hopper, H, placed nearpartition I), in order that said grain may pass the whole length of thecylinder and come in contact with all the blades before it can escape atthe outlet h. This outlet is an aperture in a sliding gate, which fitsin grooves around the cylinder B, covering a long aperture, I, in saidcylinder, and said gate may be raised or lowered to control the amountof scouring action of the blades on the grain. If the gate be low, thegrain will escape more quickly than if it be high, thus allowing lesstime forthe scouring action of the blades on it; and, further, when thegrain is high in the cylinder it offers greater depth to be plowed bythe blades and greater resistance to them, thereby being more abradedand scoured by their passage through it.

Having thus described my invention, what I claim as new is 1. Aperforated stationary outer cylinder, having an inlet through its side,near one end, to admit grain, and an outlet for grain near the otherend, in combination with a perforated revolving inner cylinder, havingblades secured on its surface, and means for drawing air and dust fromthe outer through the 'inner cylinder out through the end of the latterand discharging the same, the respective chambers of said outer andinner cylinders being in no way connected, except by the perforationsthrough the inner cylinder, as and for the purpose specified.

2. A perforated stationary outer cylinder, having a grain-inlet near oneend and a grainoutlet near the other end, in combination with aperforated revolving inner-cylinder blade IOO secured thereon, acentrifugal fan secured at the end of said inner cylinder, on the shaftthereof, and a chamber for said fan to revoly e in, connected with theinner cylinder by holes in the end thereof, said fan-chamber beingprovided with an outlet, substantially as and for the purpose specified.

3. The co1nbination,with the stationary perforated cylinder B, having agrain-inlet, H, near one end, a long opening, I, at the other end, and asliding gate, 1', having a hole, h, in it over said opening, of aperforated revolving inner cylinder, 0, having blades secured thereon,and a centrifugal fan, 13, secured on the shaft of said inner cylinderto revolve 15 therewith, as and for the purpose specified.

4. The combination, with the shaft 0, the open-webbed wheels E, securedthereon, and the perforated cylinder 0 on said wheels, of the blocks 9,bolted to said cylinder and 20 wheels, and theblades G, bolted to saidblocks, as and for the purpose specified.

SAMUEL K. TODD.

YVitnesses:

W. S. JEWELL, M. G. Hosronn.

